路基承载力试验与应用研究  

Research on Test and Application of Roadbed Bearing Capacity

作　　者：杨梦佳 史先振 孙亭亭 林树锋 史言稳 YANG Mengjia;SHI Xianzhen;SUN Tingting;LIN Shufeng;SHI Yanwen(CCCC Second Highway Consultant Co.,Ltd.,Wuhan,Hubei Province,430090 China;Jiangsu Hengyi Geotechnical Engineering Technology Co.,Ltd.,Nantong,Jiangsu Province,216002 China;School of Road,Bridge and Port and Navigation Engineering,Nanjing Vocational Institute of Transport Technology,Nanjing,Jiangsu Province,211188 China;Municipal Facilities Management Center of Guangzhou Development Zone,Guangzhou,Guangdong Province,510700 China;Jiangsu Jinpu Engineering Consulting Co.,Ltd.,Xuzhou,Jiangsu Province,221000 China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,湖北武汉430090 [2]江苏恒一岩土工程技术有限公司,江苏南通216002 [3]南京交通职业技术学院路桥与港航工程学院,江苏南京211188 [4]广州开发区市政设施管理中心,广东广州510700 [5]江苏金普工程咨询有限公司,江苏徐州221000

出　　处：《科技资讯》2024年第16期137-139,共3页Science & Technology Information

基　　金：江苏省产学研合作项目(项目编号:BY20230330);南京交通职业技术学院科研基金项目重大项目(项目编号:JZ2301);中国交通教育研究会课题项目(项目编号:JT2022YB288);全国交通运输职业教育指导委员会重点教研项目(项目编号:LQZWH202309)。

摘　　要：为了研究路基承载力,对试验路段进行了开槽、取样,以及路基承载力的系列试验。试验结果表明:细粒含量越高、塑性指数越大,土基回弹模量的数值越小。随着含水率上升,黏土质砂砾路床的回弹模量呈下降趋势;随着干密度的上升,黏土质砂砾路床的回弹模量呈上升趋势;随着细颗粒(黏粒)的增大,黏土质砂砾路床的含水率成上升趋势。In order to study the bearing capacity of the roadbed,a series of tests are conducted on the he test section,including slotting,sampling,and subgrade bearing capacity.The experimental results show that the higher the fine particle content and the higher the plasticity index,the smaller the numerical value of the rebound modulus of the soil foundation;As the moisture content increases,the rebound modulus of the clay gravel roadbed shows a decreasing trend;With the increase of dry density,the rebound modulus of the clay gravel roadbed shows an upward trend;As the fine particles(clay particles)increase,the moisture content of the clay gravel roadbed shows an upward trend.

关 键 词：回弹模量 塑性指数 干密度 含水率 

分 类 号：U416[交通运输工程—道路与铁道工程]